Pressure seal for windows and doors



Jan. 16, 1940.

H. LORENZ PRESSURE SEAL FOR WINDOWS AND DOORS Filed Sept. l, 1937 Pkdmwl'k Loren?) 1 Invencor.

1o4 f QI Q C van AT1-IY,

Patented Jan, 64, 119,40

PATE

NT OFFICE PRESSURE SEAL FOR WINDOWS AND DOGRS Helmuth Lorenz, Dusseldorf, Germany Application September 1, 1937, Serial No.

3 y Claims.

The invention relates to a'device with which a packing of Windows and doors, and in particular of outer doors, against draught, dust and rain water is effected. Simultaneouslywith this packing, the invention aims at effecting a sealing of the windows, and when desired also a pressing of the leaves or `easements against the upper part of the frame.

The fundamental idea of the invention resides in providing on the window sill or on the thresholdof the door a metal rail extending along the entire length thereof and, for examplesubstantially of Uform,iover which a second metal rail extending parallel, but in the vertical direction,

is displaceably arranged, the upper surfaces of which is adapted to the profile of the window or door frame to be packed. The movement of the movable packing railand the pressing thereof against the window anddoor frames is, according to the invention, effected by a special drive, for example a suitable lever gear, independent of the door seal. Further particular features of the construction of such a pressure sealing de- Vice according to the invention will be seen from the accompanying drawing, in which:

Figure 1 is an elevational view of the window showing the new pressure seal in the opened po-r sition,

Figures 2 and 3 are sectional views of details of the pressure seal in the opened position,

Figure 4 is an elevational view and Figures 5 and 6 are sectional views of the window, showing the pressure seal in the closed position, while l Figures 7 and 8 show a llongitudinal section, and

Figure 9 a cross-section of a further constructional form.

lIn the drawing, the reference numeral I designates the pane and 2 the lateral frame of a window Casement which is secured in the usual manner, for example by means of hinges 3, to the rany desired means, for example by letting in.

. Over this rail there engages a second rail 'I also of U-shape, the upper surface 8 ofwhich is, however, accurately adapted to the particularshape In Germany September 7, 1936 of the under side of the window frame 2. For this purpose, the upper side 8 of the U-iron 'I may be bevelled to correspond to the inclination of the lower face of the window frame, and provided with a projection 9 engaging in a recess in the window frame. In the space enclosedv by the U-irons 6 and 'I is arranged a rail, for example a fiat iron I0, on both sides of which articulated levers II, I2 pivotally secured at I3 engage. The articulated levers I2 are also pivotally arranged with their lower end on the ground sill I4 connected with the U-iron B or let in the said iron. The levers II pivotally engage with a fillet I5 rigidly connected to the U- iron l.

` Two further levers I6, I1 are pivoted with their outer ends to the lower iixed U-iron 6 and the upper movable U-iron 1, respectively. The inner ends of levers I6 and Il are pivotally connected to Yone another, but the common pivot point of these levers is not connected to the hat iron I0. v'Iheassembly of levers II, I2, i6 and Il thus acts as a control system in such a manner, thatthe upper movable U-iron 'I can be raised and lowered without being inclined (see Fig. 4).

A rigid angle lever I9, 20 rotatably mounted at 2I pivotally engages at I8 with the end of the at iron I0. A lever or handle 23 engages, also pivotally, with the free end of the arm El! at 22; The link pin 22is preferably guided in a curved slot.

The lever 23 may also be actuated in any known manner, for example with the aid of a handle 25 lying at a higher level and adapted to be readily gripped, and of a suitable transmission, for example a rack drive (see Figures 2 and 5).

Upon downward movement of the pin 22, the angle lever I9, 29 is turned in the direction of the arrow. Consequently, the flat iron Ii! is also displaced in the direction of the arrow into the position shown in Figures 4 to 6. The levers II, I2 are rthus straightened, so that the flat iron II) and consequently also the U-iron 'l are lifted and pressed against the under side of the window frame 2.

The movement of the connecting rod II] is preferably so arranged that upon pressing of the rail 'l against the window frame 2 the levers II, I2 are driven at least into the dead centre position, in which their axes form a straight vertical line, or better somewhat beyond this position. An automatic re-lowering of the rail with loosening of the seal is thus prevented.

packing kbetween the packing strip 1 and the lower window frame 2 is effected, but the window leaf may also be raised somewhat according to requirement and pressed with its upper frame 26 against the upper brickwork frame 2l o1' against a corresponding packing strip.

The overlapping of the lower rail G by-the U- iron 1 kprovides good protection of the, connecting frame against rain, snow, dust, and the like; the raised parts 28 provided on the walls of the U-iron 6 `acting as lubricating grooves affording a good hold for any lubricatingy medium introduced, for example grease, and permitting sliding of the surfaces of the movable U-iron 'I with relatively little friction. Moreover, upon slid-` ing on and off of the upper rail the paint of the U-iron 6 is not damaged.

Owing to the lower absolutely tight seal effected with the aid of the U-iron, the lower weather rail normally provided on the outerr side of all windows may be dispensed with.

Use may therefore now be made forfastening` the window of a. so-called wolfs jaw, 'even if the window leaves open inwardly, while if weather rails be provided the wolfs jaw may be used only for outwardly opening windows. The wolfs jaw fastener permits of a particularly good pressing of the window leaves in the lateral direction, so that the vertical joints of the outer window frame may be very well packed. In Figures '7, 8 and 9, such a wolfs jaw is shown in combination with a new sealing device. In these figures, the reference numeral 29 designates a window leaf engaging with its protection 30 into the corresponding recess 3| of the leaf 32. In this constructional form, the fastening is effected by a rod 33 displaceably arranged in the window leaf 32. The said rod has at its lower end a hook-shaped extension 34 which engages in a corresponding aperture 35of the rail 'l when the leaf is closed. Upon pressing back of the rail, the rod 33 is carried upwards and engages with its tapered extension 36in a corresponding recess31 in the upper brickwork frame 21 (see Figure 8).

With the new arrangement, almost complete -air tightness of these vertical joints may be 0btained. As the same is also thev case with the horizontal joints of the window owing to the lower pressure seal, it may bestated that with the aid of the arrangement according to the inventionthe window may be sealed in an airtight manner over its entire extent, so that it is very suitable for protection from the air and for all districts where such a tight sealing is desirable. f

The invention may be modied in various respects within the scope of the essential idea. For

l example, the form of the IU-'rails and their packing surface may be varied and adapted to the necessary fastening thereof to the' sill, and to the special formation -of the window frames. The mechanism for the movement of the U-rail, the number of. driving members and the like may also be variedin various respects. For example, the

transmission .may `take place with the aid of aanism within said passage operative to raise and lower said second channeled member whilst maintaining the limbs of the two members in overlapped relationship, and means external tothe passage. for actuating said. link mechanism,

whereby said second member when raised will press against the under surface of `said windo when the latter is in closed position.

2. A Aweather strip device as set forth in claim l, wherein said link mechanism comprises a pair of links pivotally connected together at one end. whilst lthe other end of each link is connected to one of said members to form a toggle joint, a push rod connected at one end to said pivotal connection and connected at its other end to said actuating means, and means for slidably supporting said rod.

3. A weather strip device as set forth in claim l, in which said actuating means comprises a lever mechanism operatively connected to said link mechanism and pivotally mounted at the side of the windowframe,

HELMUTH LORENZ. 

